Remarkable progress in distributed power generation invigorated research into DC microgrids using a controllable DC–DC converter contingent to the functionalities therein. The study explores the circulating current issue in a parallel-connected DC–DC converter and its associated current-sharing capability. Despite, the conventional droop being a promising solution with less control complexity, the current sharing is achieved at an expense of voltage drop. The prime objective of this research work is to design a control strategy that guarantees a minimized circulating current with proper current sharing for a parallel-operated DC–DC converter. This paper puts forth a dual reference-based control to alleviate the droop and load effects of the system. The primary reference is generated by considering the effect of a marginal change in the input power of the converters. The virtual resistance-based droop technique utilizes the prime reference for secondary droop reference generation. A current sharing algorithm is designed to assimilate adaptability to the scheme running under a variable line and load parameters. The comprehensive approach to the proposed control strategy has the advantages of improved current sharing and voltage regulation. A parallel DC–DC converter with the proposed control mechanism was investigated using MATLAB/Simulink and validated experimentally.


    Access

    Download


    Export, share and cite



    Title :

    Logarithmic droop-based decentralized control of parallel converters for accurate current sharing in islanded DC microgrid applications


    Contributors:

    Publication date :

    2021-04-27


    Remarks:

    Monica , P , Kowsalya , M & Guerrero , J M 2021 , ' Logarithmic droop-based decentralized control of parallel converters for accurate current sharing in islanded DC microgrid applications ' , IET Renewable Power Generation , vol. 15 , no. 6 , pp. 1240-1254 . https://doi.org/10.1049/rpg2.12103



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    DDC:    600 / 629



    Accurate Reactive Power Sharing Strategy for Droop-based Islanded AC Microgrids

    Mohammed, Nabil / Lashab, Abderezak / Ciobotaru, Mihai et al. | BASE | 2023

    Free access

    Virtual Impedance-based Decentralized Power Sharing Control of an Islanded AC Microgrid

    Pathan, E. / Khan, M. H. / Arshad, H. et al. | BASE | 2021

    Free access

    An Islanded Microgrid Droop Control using Henry Gas Solubility Optimization

    Mohamed A. Ebrahim / Reham M. Abdel Fattah / Ebtisam M. Saied et al. | BASE | 2021

    Free access


    Robust Stabilization of Parallel Inverters-Based Microgrid: Droop Control Strategy

    Alfergani, Asma / Buaossa, Nagi / Tahir, Ahmed et al. | IEEE | 2021